ЭШ · Суралцах · 51 бодлого
Trigonometry Тригонометр
From right-triangle ratios to the unit circle, exact values, graphs, identities, trig equations, and the sine and cosine rules — nearly every ЭШ trig question lives inside these six units.
Сургалтын хөтөлбөр (БСШУСЯ, А/492): 10.10, 11.6, 11.7, 12.6
01 · Курс
6 нэгжээс 6 нь бэлэн — хичээл, дадлага, өөрийгөө шалгах тесттэй. Хичээлүүд одоогоор англи хэлээр; монгол орчуулга дараа нэмэгдэнэ.
01 Right-Triangle Trigonometry Three ratios that unlock every right triangle: name the sides, pick the ratio, and solve for any missing side or angle — then aim it at towers, cliffs, and shadows. Start 02 Special Triangles & Exact Values Two triangles you'll never stop using: the square's half and the equilateral's half. From them, every exact value of 30°, 45°, and 60° — no calculator, no rounding, ever. Start 03 Radians & the Unit Circle Trigonometry escapes the triangle: angles measured by arc length, a circle of radius 1 where cosine and sine ARE the coordinates — and exact values in every quadrant. Start 04 Graphs of Trig Functions The circle unrolled into a wave: sine and cosine as graphs, then the four dials — amplitude, period, phase, midline — that tune them to fit any rhythm, plus tangent's wilder portrait. Start 05 Identities & Equations The algebra of the circle: the Pythagorean identity, the sum and double-angle formulas that manufacture new exact values — and how to solve equations whose unknown is an angle. Start 06 Laws of Sines & Cosines Trigonometry for EVERY triangle, right angle or not: the sine-based area formula, the Law of Sines, the Law of Cosines — and the strategy for solving any triangle from any three facts. Start